Here's an aerial view of the facility. The music event is being held to the South of the race track (the extreme lower left edge of the picture). The racer entrance is from the North, the music event fans will enter from the South. So with the exception of some of the music fans buying a pass to come over and check out the racing, the track is treating this as separate events.
Mini Woodstock? In Iowa?
Maybe call it
'Cornstock' ???